Amid a national recession, the Metropolitan Police forms the Special Accounting Department to crack down on waste. Madoka, a by-the-book officer obsessed with receipts and budgets, is sent to the scandal-prone Manmachi Police Station.

Her motto? “I won’t forgive even a single yen unaccounted for.”
Her passion? Not justice—but financial accuracy.

There, she meets Yukawa, a veteran detective who relies on instinct and doesn’t mind blowing the budget to solve a case.

When a murder investigation reveals a missing one-yen coin, Madoka’s accounting instincts kick in—marking the start of an unlikely partnership.

A unique investigative drama blending financial precision with emotional intensity, as two opposites clash and collaborate to uncover the truth.